Serafim Korablev Net Worth (Estimated)

Who is Serafim Korablev?

Serafim Korablev is a founder associated with YC W26.

About 21st

21st.dev is the largest React component registry for AI applications, used by 2M developers We provide the building blocks to create agent-powered apps: UI components, agent templates.

Model inputs

• Stage: seed
• Valuation tier: fallback-seed
• Valuation note: no_discovery_sources [scale: recent YC batch cannot keep an unsourced ≥$80M raise]
• Research as-of: 2026-08-04
• Funding input: no public raise amount found; stage fallback valuation

FAQ: Serafim Korablev net worth and 21st valuation

What is Serafim Korablev's net worth?

Serafim Korablev's estimated net worth / paper wealth is $13.0M (range $9.1M–$19.5M) as of 2026. Entrepreneurial Check publishes an independent model-based estimate from public company and role data.

Serafim Korablev net worth

Serafim Korablev's estimated net worth / paper wealth is $13.0M (range $9.1M–$19.5M) as of 2026. This Serafim Korablev net worth figure is estimated paper wealth, not a verified statement of assets.

How much is Serafim Korablev worth?

Serafim Korablev's estimated net worth / paper wealth is $13.0M (range $9.1M–$19.5M) as of 2026. How much Serafim Korablev is worth here means estimated paper wealth from public company and role data — not financial advice.

How rich is Serafim Korablev?

Serafim Korablev's estimated net worth / paper wealth is $13.0M (range $9.1M–$19.5M) as of 2026. “How rich is Serafim Korablev” here means estimated paper wealth from public company and role data — not verified net worth or financial advice.

Serafim Korablev fortune

Serafim Korablev's estimated net worth / paper wealth is $13.0M (range $9.1M–$19.5M) as of 2026. This Serafim Korablev fortune figure is estimated paper wealth only, not a verified statement of assets.

Serafim Korablev equity value

Serafim Korablev's estimated net worth / paper wealth is $13.0M (range $9.1M–$19.5M) as of 2026. Serafim Korablev equity value on this page is modeled paper wealth from estimated ownership — not a disclosed cap table or verified net worth.

What is 21st valuation?

21st's estimated valuation on Entrepreneurial Check is $20.0M. Independent model output, not a verified appraisal or official mark.

What is 21st post-money valuation?

21st's estimated valuation on Entrepreneurial Check is $20.0M. That figure is a modeled post-money mark when a public raise is available — not a verified appraisal or official mark.

What is 21st CEO net worth?

Serafim Korablev is listed as CEO / co-founder at 21st. Serafim Korablev's estimated net worth / paper wealth is $13.0M (range $9.1M–$19.5M) as of 2026. This 21st CEO net worth figure is an independent paper-wealth estimate, not verified net worth.

What is 21st funding?

21st funding, when a public raise is available, is a model input on this Entrepreneurial Check profile. How much 21st raised is not a complete cap table — figures are estimates only.

How much did 21st raise?

How much 21st raised, when disclosed, informs the estimated 21st valuation and founder paper-wealth figures on this page. Independent estimate only — not a complete cap table or financial advice.

How much money did 21st raise?

How much money 21st raised, when a public figure is available, is a model input for the estimated 21st valuation on this profile. Estimates only — not a complete cap table.

What is 21st series funding?

21st series funding, when a public raise is disclosed, informs the estimated 21st valuation here. Not a complete financing history.

What company is Serafim Korablev building?

Serafim Korablev is CEO / co-founder at 21st, a Y Combinator-backed startup (batch W26).

What does 21st do?

21st — UI building blocks for the agentic internet

What YC batch is Serafim Korablev from?

Serafim Korablev is associated with Y Combinator batch W26.

Where is Serafim Korablev based?

Public directory data lists Serafim Korablev's region as United States of America.

What industry is Serafim Korablev in?

Serafim Korablev is listed under B2B, Engineering, Product and Design.

How big is 21st?

Public data lists 21st's team size as 3.

Is Entrepreneurial Check affiliated with Y Combinator?

No. Entrepreneurial Check is an independent informational site and is not affiliated with, endorsed by, or sponsored by Y Combinator or the profiled companies.